Hi Barbara,
No, I don't have the need to clear after eating. It sounds like you are doing a lot in terms of airways clearance. I don't do postural drainage, though something I will try. Are you now doing postural drainage for the lower lobe? I was online and saw different airway clearing techniques to reach different areas of the lungs. I didn't pay much attention to it, but I will revisit. I recently finished reading "Breath" by James Nestor. I've been working hard on inhaling through nose and slowly exhale. Also doing exercises whenever I think of it to inhale slowly (through nose), hold breath for 3 seconds, and exhale slowly for 5 seconds. As the weeks pass, I'm breathing better, and this week forgot my daily inhaler twice-highly unusual. 95% plus of his book is not instructional but you may want to google his you tube videos. I've also started (just today) a meditation for healing. I found this "Empowering the Power Within" meditation by Dr Joe Dispenza. A warning-he's highly alternative and may not be for everyone. It's a working meditation which requires some concentration and imagination. I'm going to do it every day for the next month and see if I notice any improvement. It's a lot of visualization with the immune system being the target. Good luck Barbara, I wish you the best! Kathy